HYBRID WORKING VEHICLE - HITACHI CONSTRUCTION MACHINERY

Title:

HYBRID WORKING VEHICLE

Document Type and Number:

WIPO Patent Application WO/2015/186381

Kind Code:

A1

Abstract:

Provided is a hybrid working vehicle which can achieve improved engine efficiency. A hybrid control device (35) according to the present invention comprises: a necessary power calculating section (35A) that calculates the power required for the operation of the vehicle; a defined rotational speed setting section (35B1) that sets a first rotational speed and a second rotational speed, which define the operating range of an engine (12) according to the necessary power calculated by the necessary power calculating section (35A); a variable speed control section (35B2) that performs variable speed control of the rotational speed of the engine (12) according to the necessary power calculated by the necessary power calculating section (35A); and an electricity-storage-device electricity control section (35C1) that performs control to supply to an electric motor (26) an amount of electricity of an electricity storage device (29) corresponding to the amount of power that the engine (12) lacks for the necessary power calculated by the necessary power calculating section (35A), said control being performed when the rotational speed of the engine (12) subjected to variable speed control by the variable speed control section (35B2) is the first rotational speed.

Inventors:

KANEKO SATORU (JP)
IKIMI TAKASHI (JP)
ITOU NORITAKA (JP)
KUNITOMO YUUICHI (JP)

Application Number:

PCT/JP2015/055461

Publication Date:

December 10, 2015

Filing Date:

February 25, 2015

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACHINERY (JP)

International Classes:

B60W10/26; B60K6/46; B60L50/15; B60W10/06; B60W10/08; B60W20/00; E02F9/20; F02D29/00; F02D29/06

Foreign References:

JP2013039875A	2013-02-28
JP2012025249A	2012-02-09
JPH11332018A	1999-11-30
JP2006341848A	2006-12-21

Other References: